花状SnS2微球用作高效锂空气电池催化剂的研究

Study on Flower-Like SnS2 Microspheres as High Efficient Catalysts for Li-Air Batteries

因超高的理论能量密度,锂空气电池在航空航天、电动汽车等领域展示了广阔的应用前景,但其目前的性能仍与实际使用需求有较大的差距。本文旨在开发具有双功能催化作用的正极催化剂以提升锂空气电池的性能。采用简易的一步溶剂热法成功制备了花状结构的SnS2微球,并首次探究了其作为可充锂空气电池正极催化剂的应用前景。结果表明:所制备的花状SnS2微球对锂空气电池的正极过程具有优异的催化性能,大大改善了以其为催化剂的锂空气电池的综合性能,证明SnS2是一种有潜力的、值得深入研究的锂空气电池用催化剂材料。

Due to the super-high theoretical energy density,Li-air batteries have shown a broad application prospect in many fields such as aerospace and electrical vehicles. However,there still is a great gap between their current performance and the actual requirements. This paper aims to develop a cathode catalyst with high efficient bifunctional catalysis to improve the performance of Li-air batteries. Flower-like SnS2 microspheres with pure phase are successfully synthesized via a facile one-step thermal-solvent route,and its application prospect as a cathode catalyst for rechargeable Li-air batteries is explored with a series of electrochemical experiments for the first time. The results show that the as-prepared flower-like SnS2 microspheres have excellent catalytic properties for the cathode reactions in Li-air batteries,the comprehensive performance of Li-air batteries with which as the catalyst are greatly improved. This verifies that SnS2 is a promising catalyst material for Li-air batteries and needs to be further studied in the future.